Oil burner



Feb. 23 1926. '1,574,560

T. CRAWFORD okL BURNER Filed March 19, 1925 F'IG. 1

15J?. Cr/'Win77 Patented Feb. 23, 1926.

UNITE@ STA'IES THOMAS A. CRAWFORD, OF SACRAMENTO, CALIFORNIA.

OIL BURNER.

Application filed March 19, 1925. Serial No.. 16,743.

Be it known that l, THOMAS A. CRAW- ronn, a citizen of the United Statesof America, residing at Sacramento, in the county of Sacramento andState of California, have invented certain new and useful Improvementsin Oil Burners, of which the following is a specification.

This invention relates to new and useful improvements in oil burners.

The primary object of this invention is to provide a burner adapted forconsuming kerosene and 'distillate as a fuel by preheating the oil priorto its reaching the point of discharge so that it will vaporize and be`discharged as combustible gas.

A Vfurther object of the invention is to provide a novel form of burnerfor accomplishing the above set forth purpose.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a vertical sectional view of a burner pan and mixing chamberwith a burner jet properly associated therewith. and a deflector shownin elevation supported by the said conduit,

Figure 2 is an elevational view of the conical mixing chamber shown inFig. 1, and

Figure 3 is a fragmentary top plan view of a portion of the burner panand shows the igniting wick carried thereby.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of this invention, the numeral 5 designates thefuel conduit in its entirety which consists of a plurality of pipesections connected at their ends by elbows and arranged for forming areturn bend or rectangular outline. The en'd pipe section 5- hassuitably connected to its free end the T-coupling 6 which has a nozzleor jet 7 threaded in one of the openings of the coupling while a solidplug 8 is removably threaded in the remaining opening. The jet or nozzle7 is provided with arelatively large bore 9 extending substantiallyentirely through the jet or nozzle with a reduced bore 10 extending theremainder of its length, the said reduced bore 10 causing the gaseousfuel to be discharged with considerable velocity while the enlarged bore9 will pern'iit the jet or nozzle to automatically clean itself of allsoot or foreign matter. A line wire'mesh screen 11 is located within thebody portion of the coupling .G and is employed for straining the fuelprior to its reaching the discharge jet or nozzle 7, for the purpose ofpreventing clogging of the latte-r.

Suitably 'mounted uponone of the vertical pipe sections of the fuelconduit 5, as by the two part clamp structure 12, is a burner pan 13which is of substantially circular forma.- tion having a flat bottomsurface 13l and a conical or radially sloping top surface 13b. Theperipheral edge of this pan 13 is provided with an upstanding flange 14while suitably spaced inwardly thereof is'forme'd a circular series oflugs 15 whichare suitably spaced, as best illustrated in Fig. 3, forforming the openings 16. Arranged in the annular space formed betweenthe flange 14 and circular series of lugs 15 is an asbestos ring 17having a cross-sectional shape, as shown in Fig. 1, which is oftriangular formation with its greatest thickness adjacent the circularseries of lugs 15.

Resting upon the pan 13 and retained centrally located in respectthereto by the circular series of lugs 13 is a conical mixing chamber 18having its apex apertured at 19.

and further having a circular series of substantially round holes 520`formed in its larger end which communicate through the edge of this end.

Supported by the upper horizontal pipe section of the fuel conduit is asubstantially circular deflector disk or plate 21 which is intended tobe arranged concentrically with the conical mixing chamber 18 and thejet or nozzle 7.

The operation of this burner may be described as follows To light theburner, the operator starts the flow of crude oil through the conduit 5,by means of any suitable valve structure interposed in the conduit andnot shown, until a desired amount of the oil has overilowed from the jetor nozzle 7 onto the conical or radially sloping surface 13b of theburner pan 13. This overflowing oil will drain outwardly to the asbestoswick 17 which will be saturated with the same. The flow of oil shouldthen be shut off and the oil in the wick 17 i nited. This burning oilwill heat the sections of the conduit 5 located above and around thesame and will also tend to heat the mixing chamber 18. lifter the oil inthe conduit has been properly heated to cause the same to vaporize, theoil supply is again turned'on and the gaseous fuel is discharged fromthe jet or nozzle 7 into the mixing' chamber 18 from which it willescape upwardly through the aperture 19, the said escaping gas beingvignited by the burning oil in the Wick 17. The upward travel ol fuelthrough the mixing` chamber 18 will cause air to be sucked into the samethrough the openings 2O at the lower edge thereof` andthis air will bemixed with the fuel for producingv a desired mixture. The flame Willimpinge against the deflector disk or plate 21 and will be spreadradially outwardly by the same, producing a very hot blaze andcontinuing to heat the oil as it passes through the conduit 5.

Itis to be understood that the form of this invention herewith shown anddescribed is to be taken asapre'ierred example of the same, and thatVarious changes in the shape, size, and arrangement otparts may beresorted to Without departing from the spirit of the invention or thescope of the subjoined claims.

Having thus described the invention, I claim:-

l. In a burner of the type described, a

burner pan comprisingl a disk-like body portion having a. radiallysloping 'top surface, a circular series oft spaced lugs projectingperpendicular-ly from the top face of the body portion, and aperpendicular flange formed on the peripl'leral edge oit the pan, a Wickcarried by the pan between the flange and the circular series of lugs, aburner nozzle centrally disposed above said pan, and a conical mixing'chamber resting upon said pan and conlining said burner nozzle.

2. In a burner of the type described, a burner pan con'iprising a bodyportion haying a sloping top Surface, a series of lugs projecting fromthe top surface of the body portion, and a dang-e formed on the top sur-:tace of the body portion in spaced relation to the series of lugs a.Wick carried by the pan between the flange and series of lugs, a burnernozzle disposed above said pan, and a mixing chamber above the pan andconlining' said burner nozzle.

In testimony whereof I aiiix my Signature.

THOMAS A. CRAWFORD.

